Παραπομπή APA

(2002). Free software, free society: Selected essays of Richard M. Stallman. GNU Press.

Παραπομπή Chicago Style

Free Software, Free Society: Selected Essays of Richard M. Stallman. Boston: GNU Press, 2002.

Παραπομπή MLA

Free Software, Free Society: Selected Essays of Richard M. Stallman. GNU Press, 2002.